Buy research peptides UK. Lab tested, batch by batch.
38 research compounds with HPLC and mass spectrometry batch testing, published certificates, same-day dispatch and free tracked UK delivery over £50.
Same-day dispatch on working days before 2pm
WhatsApp customer support group
Group invitations are not available yet. For batch certificates, visit our Lab Reports page. For order enquiries, use our contact page.
MOST ORDERED
Best-selling research peptides
Buy 2, get the 3rd free
On Retatrutide 10mg and Tirzepatide 20mg. Add three vials and the third comes off automatically. Stacks with spend savings of 10% over £150, 15% over £250 and 20% over £400.
BROWSE BY SECTION
Shop by section
Weight Loss
Copper & Copper Blends
Brain & Focus
Growth Hormone
Recovery & Repair
Longevity & Cellular
Tanning & Libido
Sleep
Bacteriostatic Water
Accessories
Reconstitution calculator
Stock concentration, molarity and working dilutions for any vial.
HOW WE WORK
From synthesis to your bench
Synthesis
Compounds are produced by solid-phase peptide synthesis and supplied lyophilised in sealed vials.
Independent testing
Every batch is analysed by an independent laboratory using HPLC for purity and mass spectrometry for identity.
Published certificates
Certificates go on our Lab Reports page, and the batch number on your vial matches its report.
Tracked dispatch
Orders before 2pm on working days leave the same day with Royal Mail Tracked 24.
WHY VYRAX LABS
What you can expect from every order
HPLC and MS tested
Purity by high-performance liquid chromatography, identity by mass spectrometry, batch by batch.
Certificates you can read
Full reports published on the Lab Reports page, not just a purity badge.
Same-day tracked dispatch
Royal Mail Tracked 24, free over £50. Order before 2pm on working days.
Free reship guarantee
If a parcel is lost or arrives damaged, we send a replacement at no cost.
Protective packaging
Padded vials in a plain outer parcel with no product names on the outside.
Real research data
CAS numbers, molecular formulas, sequences and PubMed references on every compound page.
TRANSPARENCY
Read the lab report before you order.
Every certificate names the batch, the testing laboratory, the methods and the purity result. Search by the batch number printed on your vial to confirm it matches.
Open Lab ReportsLatest certificates
Published as each batch is released
First batch certificates publishing soon
Certificates appear here as each launch batch clears independent testing.
PRE-FORMULATED
Peptide blends
Multi-peptide vials for combination research, each component listed on the product page.
LABORATORY NOTES
Research guides
How to reconstitute lyophilised peptides
A step-by-step laboratory guide to reconstituting lyophilised research peptides with bacteriostatic water, including concentration maths and handling tips.
Peptide storage and handling guide
How to store lyophilised and reconstituted research peptides: temperatures, light, moisture, freeze-thaw cycles and shelf-life considerations.
How to read a peptide certificate of analysis
What a peptide certificate of analysis should show, how HPLC purity and mass spectrometry work, and the red flags to look out for.
BUYING GUIDE
Buying research peptides in the UK
When you buy peptides in the UK for research, the things that matter are identity, purity and traceability. Vyrax Labs lists the CAS number, molecular formula and molecular weight for each compound, links to the peer-reviewed literature, and has every batch tested by an independent laboratory using HPLC and mass spectrometry.
Our catalogue covers metabolic research peptides such as retatrutide, tirzepatide and semaglutide, regenerative research peptides such as BPC-157, TB-500 and GHK-Cu, growth hormone secretagogues, longevity peptides and pre-formulated blends. Most compounds come in more than one vial strength, and each product page shows the cost per mg so you can compare.
Orders placed before 2pm on a working day are dispatched the same day with Royal Mail Tracked 24, and delivery is free over £50. All products are sold strictly for laboratory research use only.
Common questions
How quickly do you dispatch?+
Orders confirmed before 2pm on a working day are dispatched the same day. Orders confirmed after the cut-off, at weekends or on bank holidays are dispatched on the next working day.
How much is delivery?+
UK delivery is free on orders over £50. Below that, a flat fee of £4.99 applies. Every parcel is sent with tracking.
How is quality documented?+
Batches are sent to an independent laboratory for HPLC purity analysis and mass spectrometry identity confirmation. Certificates of analysis are published on our Lab Reports page and linked from each product page as they are issued.
How should I store lyophilised peptides?+
For long-term storage keep sealed vials frozen at -20°C, away from light and moisture. For short periods, 2 to 8°C refrigeration is suitable. Lyophilised peptides tolerate room temperature during transit.
Are research peptides legal to buy in the UK?+
Many research peptides are not licensed medicines and may be sold for laboratory research, provided they are not marketed or supplied for human use. The regulatory status of individual substances can change, so buyers are responsible for checking the rules that apply to their own work.
Who can order from Vyrax Labs?+
Orders are accepted from adults aged 18 or over who are buying for legitimate laboratory, analytical or educational research. Every order includes a confirmation that the materials will not be used in humans or animals.
Buying for a lab or research group?
Spend savings apply automatically: 10% over £150, 15% over £250, 20% over £400.